One thing to consider: in the last year and half of the pandemic if a business hasn't figured out what their web presence is or how it helps them they probably went out of business. Those that have figured it out probably have a list of pain points.

For example, small mom-n-pop restaurants had to figure out online ordering and probably went with some delivery related service to start with, should be easy to research. Huge chain restaurants have apps - what would a mom-n-pop restaurant app do for customers? Notifications about weekend specials might be neat with pics of the dish (I always have trouble envisioning what a special might be if I haven't had it before, seeing food makes me hungry). A simple interface for them to push out multi-channel notifications might solve some pain.

Or there may be small, non-retail businesses that need more than just a web presence - like a small inventory system or things related to their workflow but isn't just a simple website.